[heathkit]

It seems like I get calls from recruiters every other week looking for people with Grails experience.

I used Grails for a project four years ago - I think it made a lot of sense then. We wanted a simple web UI for something that needed to deeply integrate with some java libraries. We had just done a relatively simple UI with Spring and it was pretty amazing how much better it was to work in Groovy.

However, these days I don't see why anyone would pick Grails over Rails. You can deploy rails on the jvm just fine, and it's much more mature. There are tons of tutorials and example code out there.

It's not a performance thing - it's just that ruby/rails is pretty mature now and runs on the JVM very well.